Buccochromis rhoadesii Breeding Guide

Breeding Buccochromis rhoadesii, a large piscivorous Lake Malawi hap; males build sloping sand bowers and the female mouthbroods the eggs.

Overview

Buccochromis rhoadesii is a large piscivorous haplochromine cichlid widely distributed in Lake Malawi and the upper Shire River. FishBase gives a maximum length of 34.1 cm TL. It inhabits muddy bottoms in shallow, sheltered bays and sandy areas off beaches, living in small groups while juveniles form large shoals, and feeds on fish.

Sexing

The genus comprises relatively large haplochromine cichlids and shows the sexual dimorphism typical of Lake Malawi haps: dominant males are larger and develop the strongest nuptial colour, while females remain plainer. Spawning males are the most strongly coloured fish in a group.

Conditioning

As a piscivore, broodstock should be conditioned on a meaty, protein-rich diet. Provide a large tank with open sand and stable, firm, alkaline rift-lake water to support breeding readiness. In the lake the species occupies muddy bottoms in shallow, sheltered bays and sandy areas off beaches, so a calm setup with open sand and gentle structure reflects its natural environment and helps it settle into spawning condition.

Breeding Setup

A single breeding male creates a large heap of sand with a sloping surface for spawning. Provide a spacious tank with deep open sand so a male can construct this bower, and house him with several females to spread courtship across the group.

Spawning Behaviour & Trigger

Spawning takes place on the sloping sand bower built by the male. As a Lake Malawi haplochromine the female collects the eggs and broods them in her mouth after the male fertilises them, following the maternal mouthbrooding pattern universal to this group.

Egg & Fry Care

The female incubates the eggs and larvae in her buccal cavity for roughly three weeks, as is typical for the group, before releasing the free-swimming fry. Because the adults are predatory, released fry are best reared away from larger fish on suitably sized foods.

Common Challenges

This is a demanding species to breed because of its large adult size, predatory diet and need for a big tank with deep sand for bower construction. In the lake adults live in small groups while juveniles form large shoals, so a roomy tank that allows a group to be housed helps reduce tension. The holding female stops feeding while brooding, so condition broodstock well beforehand to maintain her through the roughly three-week incubation.